Art of making wrought-metal boiler-brackets.



No. 646,777. Patented Api 3, 1900'.

u. L; WILSBN. ART OF'IIAKING WBOUG HT METAL BOILER BRACKETS.

( Applicstion fl1ed Apr. 24, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

HARRY L. WILSON, OF ERIE, PENNSYLVANIA.

ART or MAKING WROUGHT-METAL BOILER-BRACKETS.

SPECIFICATION forming part of Letters Patent No. 646,777, dated April 3,1900.

Application filed April 24, 1899.

To aZZ whom it may concern:

Be it known that I, HARRY L. WILSON, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsyl-- Vania,have invented certain new and useful Improvements in the Art of MakingWrought- Metal Boiler-Brackets; and I dohereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

Boiler brackets or lugs have been heretofore made by rolling a blank ofsheet metal to form flanges along the side edges in one case and to forma central flangeor rib in an-' other case. These brackets or lugs haveproved in a measure satisfactory; but an objection has been discoveredto the first form in that it is weak between the side flanges, causingbending of the material when the weight comes on one of the rollersbetween said flanges, and the second form has been found objectionablein that there is weakness at the outer edges, causing the bending of thematerial when the weight falls upon the outer rollers. 1

My invention is designed to overcome these objections; and it consistsof a boiler-bracket having bracing-flanges located intermediate of theside edges of the bracket.

It also consists in the method of producing the same.

In the drawings forming a part of this specification, Figure 1represents a perspective View of a completed bracket orlug constructedin accordance with my invention. Fig. 2 is a similar view of a sectionof I-beam, which constitutes the blank from which my ,im proved bracketis made. Fig. 3 is a similar view showing the lower flanges of theI-beam bent outwardly into the position which they assume before theblank is pressed into shape to fit a boiler.

The bracket 1 is formed with a flat base 2,

seen No. 714,261; (No model.)

formed.

It should be noted that it is diificult, if not impossible, to produceor form high ribs or flanges between and away from the edges of a flatbar or plate of metal. I, therefore, in constructing my bracket takeasection of I beam, substantially as shown in Fig. 2 of the drawings,and pass the same through suitable rolls to press out the lower flanges5 5 until they are in alinement with the'central web 6 of the beam. Indoing this the blank is converted into the shape shown in Fig. 3 of thedrawings, forming a broad bearing-surface with bracing-flangesintermediate of the side edges thereof. When in the form shown in Fig.3, the blank is pressed into the shape shown in Fig. 1 of the drawings,so as tofit the boiler to which the same is to be applied.

Weakness at the center andends of the bracket is overcome in'thecompleted lug, and

bending of the same at the points notedis avoided. I What I claim as myinvention is- The improvement in the art of making wrought-metalboiler-brackets having a plurality of flanges intermediate the sideedges thereof which consists in rolling the flanges on one side of anI-beam outwardly to the same plane with the central web cutting the beamto the desired length and then bending it to form a curved bar to fitthe boiler, and a horizontal bar to rest on the boiler-support,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.HARRY L. WILSON. Witnesses;

J. P. FITTING, MILEs R. NAsoN.

